[Bug c++/62181] [C/C++] Expected new warning: "adding 'char' to a string does not append to the string" [-Wstring-plus-int]

[ryxi at stu dot xidian.edu.cn]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62181

--- Comment #10 from Xi Ruoyao <ryxi at stu dot xidian.edu.cn> ---
A series of patch sent to gcc-patches:

<https://gcc.gnu.org/ml/gcc-patches/2017-06/msg00729.html>